Start subnet offset at 1 to avoid overlap with kind cluster ips

Makefile

@@ -423,7 +423,7 @@ deploy-dependencies: kustomize dependencies-manifests ## Deploy dependencies to
 	kubectl -n "$(KUADRANT_NAMESPACE)" wait --timeout=300s --for=condition=Available deployments --all
 
 .PHONY: install-metallb
-install-metallb: SUBNET_OFFSET=0
+install-metallb: SUBNET_OFFSET=1
 install-metallb: kustomize yq ## Installs the metallb load balancer allowing use of an LoadBalancer type with a gateway
 	$(KUSTOMIZE) build config/metallb | kubectl apply -f -
 	kubectl -n metallb-system wait --for=condition=Available deployments controller --timeout=300s

hack/quickstart-setup.sh

@@ -70,7 +70,7 @@ export CONTAINER_RUNTIME_BIN=$(containerRuntime)
 export KIND_BIN=kind
 export HELM_BIN=helm
 export KUSTOMIZE_BIN=$(dockerBinCmd "kustomize")
-export SUBNET_OFFSET=0
+export SUBNET_OFFSET=1
 export HUB=1
 
 YQ_BIN=$(dockerBinCmd "yq")
@@ -402,7 +402,7 @@ if cluster_exists "${KUADRANT_CLUSTER_NAME}"; then
             next_cluster_number=$((last_number + 1))
         fi
         KUADRANT_CLUSTER_NAME="${KUADRANT_CLUSTER_NAME}-${next_cluster_number}"
-        SUBNET_OFFSET=${next_cluster_number}
+        SUBNET_OFFSET=$((SUBNET_OFFSET + 1))
         HUB=0
         echo "Next cluster number will be ${KUADRANT_CLUSTER_NAME}."
         read -r -p "Is it okay to create the cluster '${KUADRANT_CLUSTER_NAME}'? (y/N): " confirm </dev/tty